simple past tense and past participle of copper

(nautical) (of the hull of a wooden ship) sheathed below the waterline with thin sheets of copper to prevent the attack of teredo shipworms and limit the buildup of weed

(uncountable) A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29. / The reddish-brown colour/color of copper.

Made of copper. / Having the reddish-brown colour/color of copper.

To sheathe or coat with copper.

(slang, law enforcement) A police officer.

plural of copper

present participle of copper

The act of covering with copper. / An envelope or covering of copper.

plural of coppering